The cruise industry is waiting for the new CDC Cruise Rules to arrive to start operating on a regular basis. Having issued the Framework for Conditional Sailing Order for Cruise Ships in late October, the CDC has yet to release referenced technical regulations which will define a return to service.
The next step is to do trial sailings with volunteers, and adjust the safety and operational measures within the cruise ships. Read more here: https://www.cruiseindustrynews.com/cruise-news/24418-cdc-cruise-rules-may-be-just-days-away-volunteer-sailings-next.html